Discount Calculator

Work out sale prices and savings. Apply a single discount or stack several (20% off, then 10% off…), optionally add sales tax, and see the final price plus total saved. A second mode finds the effective percent-off between an original and a sale price. Runs entirely in your browser.

Original price

Sales tax (%) — optional

Discounts (applied in order)

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Add a discount to see the sale price.

Stacked discounts apply sequentially: 20% then 10% on $100 → $100 × 0.8 × 0.9 = $72 (not 30% off). Effective discount = (original − sale) ÷ original. Tax is applied to the already-discounted sale price. Runs locally — no prices leave your browser.